Type-cleaning device for type-writing machines



(N M a 1.

0 e B. HOLMES & J. H. RALSTON.

TYPE CLEANING DEVICE FOR TYPE WRITING MACHINES- No. 443,830.

Patented Dec. 30, 1890.

qmvaNT R \(HTNESSBS,

UNITED STATES PATENT OFFICE.

BUCKLEY II. HOLMES AND J. IIUSS RALSTON, OF GOSI-IEN, INDIANA.

TYPE-CLEANING DEVICE FOR TYPE-WRITING MACHINES.

SPECIFICATION forming part of Letters Patent No. 443,830, dated December30, 1890. Application filed August 20, 1890. Serial No. 362,482. (Nomodel.)

To all whom it'may concern.-

Be it known that we, BUOKLEY II. HOLMES and J. I-IUss RALsToN, citizensof the United States, residing at Goshen, in the county of Elkhart, inthe State of Indiana, have invented a new and useful Type-CleaningDevice for TypeWVr-iting Machines in which the Type are Attached toMovable Rods or Bars, of which device the following is. a specification.

Our invention relates to improvements in t ype-cleaning devices fortype-writing machines; and it consists in the construction, novelcombination, and adaptation of devices hereinafter described andclaimed.

In the accompanying drawings, Figure 1 is a vertical section of thebrush with its attachments. Fig. 2 is a plan of the brush. Fig. 3 is across-section of brush. Fig. 4 is the brush and attachments shown inoperative connection with a type-writing machine.

Similar letters refer to similar parts throughout the several views.

The cleaning device or brush may be of any soft substance adapted tosuch uses; but it is preferably a brush with stiff bristles made bysetting the bristles in the outer rim of a horizontally-placed disk orframe of the necessary shape to allow the bristles to come in contactwith the faces'of the type in a typewriting machine at each upward anddownward motion of the brush. In the machines in which the type-basketis round the brush would be made circular, and where the typebasket isoval the brush should be of suitable shape to conform to it. .In'thedrawings the brush is shown of a form adapted specially for use in theRemington type-writer No. 2, caligraph, and similar machines having anoval type-basket.

In the drawings, A represents the brush, which is attached on the underside to a vertical rod B, which is pivoted to the end of a lever-bar O.This lever-bar is pivoted to a fulcrum D. The fulcrum is attached at itsbase to a bar E, which is attached to the frame of the type-writingmachine. The outer end F of the lever-bar O is flattened in suitableshape, so that the brush A may be made to rise by the pressure exertedby the hand of the operator at the end F of the lever.

On removing the pressure, the brush, by its own weight, returns to theposition shown by the dotted lines in .Fig. 1, where it rests out of theway of the type when the type-writing machine is being operated.

In operation, as will be readily seen, the type-cleaning attachmentshown cleans the type by bringing the bristles of the brush A intofrictional contact with the type-faces by causing the brush to rise andfall by an alternating pressure on the outer end F of the lever C. Toprevent the brush from varying from its true perpendicular motion whereit is moved by an upward pressure from below, as is done in theparticular device shown in Fig. 1, upright standards G G are rigidlyattached to the cross-bar E. These upright bars G G enter tubularcollars or bearings H H, which are attached to the under side of thebrush A, and the brush-body is also perforated drawings is the simplest,and the lever device shown for giving the rising and falling motion tothe brush'is equally efficient with any other; but as the same mot-ionmay be produced by many common devices we do not care to limit ourselvesto any specific means.

Such changes may be madein the construction of our improved device, toadapt the same for usein conjunction with various machines, as fairlyfall within the scope of our invention. v

In the operation of the lever the device shown, in which the brush A isfixedly attached to the vertical rod B at the point a and the fulcrum Dis loosely attached to the cross-bar E at 1), seems to produce the mostsatisfactory result; but substantially the same result may be effectedby attaching the brush A loosely to the vertical rod B at the pointa andthe fulcrum D fixedly to the cross-bar E at b, and we do not limitourselves to the particular form of construction shown.

Having thus described our device, what we claim as our invention, anddesire to secure by Letters Patent, is

with its type and type-bars, & brush capable i the brush, substantiallyas described, and for of being raised and lowered with a perpenthepurpose shown.

dieulm' motion by means of a lever, one end of which is attached to thebrush and the 5 fulcrum of which is attached to the frame of i IBUCKLEYl-[. HOLMES. the machine, and upright standards also rig- Witnesses:

J. IIUSS RALSTON.

idly attached to the frame of the machine, en- EDWARDR. HARPER, tel-in;-bearings attached to the brush to guide XVILBER L. STOVER.

